Platinum-rhodium wire weighs more than 40 centimeters

Approximately 20 grams. The weight of platinum-rhodium wire varies with the length and diameter, a 40cm long platinum-rhodium wire with a diameter of 0.2mm weighs about 20 grams. Platinum-rhodium wire has a wide range of applications in industry, medical and scientific research, and is commonly used in the manufacture of temperature sensors, optical instruments, catalysts, etc. It is also used in the manufacture of jewelry and other high-grade consumer goods.